Workspace.java revision 760e5375f003accf04f789e90a919ed476d4c335
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.animation.Animator; 24import android.animation.Animator.AnimatorListener; 25import android.animation.AnimatorSet; 26import android.animation.ObjectAnimator; 27import android.animation.PropertyValuesHolder; 28import android.animation.TimeInterpolator; 29import android.animation.ValueAnimator; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Color; 48import android.graphics.Matrix; 49import android.graphics.Paint; 50import android.graphics.Rect; 51import android.graphics.RectF; 52import android.graphics.Region.Op; 53import android.graphics.drawable.Drawable; 54import android.net.Uri; 55import android.os.IBinder; 56import android.os.Parcelable; 57import android.util.AttributeSet; 58import android.util.Log; 59import android.util.Pair; 60import android.view.Display; 61import android.view.DragEvent; 62import android.view.MotionEvent; 63import android.view.View; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TabHost; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import com.android.launcher.R; 70import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 79 @SuppressWarnings({"UnusedDeclaration"}) 80 private static final String TAG = "Launcher.Workspace"; 81 82 // This is how much the workspace shrinks when we enter all apps or 83 // customization mode 84 private static final float SHRINK_FACTOR = 0.16f; 85 86 // How much the screens shrink when we enter spring loaded drag mode 87 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 88 89 // Y rotation to apply to the workspace screens 90 private static final float WORKSPACE_ROTATION = 12.5f; 91 private static final float WORKSPACE_TRANSLATION = 50.0f; 92 93 // These are extra scale factors to apply to the mini home screens 94 // so as to achieve the desired transform 95 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 96 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 97 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 98 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 101 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 102 103 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 104 private static final int BACKGROUND_FADE_IN_DURATION = 350; 105 106 // These animators are used to fade the children's outlines 107 private ObjectAnimator mChildrenOutlineFadeInAnimation; 108 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 109 private float mChildrenOutlineAlpha = 0; 110 111 // These properties refer to the background protection gradient used for AllApps and Customize 112 private ObjectAnimator mBackgroundFadeInAnimation; 113 private ObjectAnimator mBackgroundFadeOutAnimation; 114 private Drawable mBackground; 115 private Drawable mCustomizeTrayBackground; 116 private boolean mDrawCustomizeTrayBackground; 117 private float mBackgroundAlpha = 0; 118 private float mOverScrollMaxBackgroundAlpha = 0.0f; 119 private int mOverScrollPageIndex = -1; 120 121 private View mCustomizationDrawer; 122 private View mCustomizationDrawerContent; 123 private int[] mCustomizationDrawerPos = new int[2]; 124 private float[] mCustomizationDrawerTransformedPos = new float[2]; 125 126 private final WallpaperManager mWallpaperManager; 127 128 private int mDefaultPage; 129 130 private boolean mPageMoving = false; 131 private boolean mIsDragInProcess = false; 132 133 /** 134 * CellInfo for the cell that is currently being dragged 135 */ 136 private CellLayout.CellInfo mDragInfo; 137 138 /** 139 * Target drop area calculated during last acceptDrop call. 140 */ 141 private int[] mTargetCell = null; 142 143 /** 144 * The CellLayout that is currently being dragged over 145 */ 146 private CellLayout mDragTargetLayout = null; 147 148 private Launcher mLauncher; 149 private IconCache mIconCache; 150 private DragController mDragController; 151 152 // These are temporary variables to prevent having to allocate a new object just to 153 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 154 private int[] mTempCell = new int[2]; 155 private int[] mTempEstimate = new int[2]; 156 private float[] mTempOriginXY = new float[2]; 157 private float[] mTempDragCoordinates = new float[2]; 158 private float[] mTempTouchCoordinates = new float[2]; 159 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 160 private float[] mTempDragBottomRightCoordinates = new float[2]; 161 private Matrix mTempInverseMatrix = new Matrix(); 162 163 private SpringLoadedDragController mSpringLoadedDragController; 164 165 private static final int DEFAULT_CELL_COUNT_X = 4; 166 private static final int DEFAULT_CELL_COUNT_Y = 4; 167 168 private Drawable mPreviousIndicator; 169 private Drawable mNextIndicator; 170 171 // State variable that indicates whether the pages are small (ie when you're 172 // in all apps or customize mode) 173 private boolean mIsSmall = false; 174 private boolean mIsInUnshrinkAnimation = false; 175 private AnimatorListener mShrinkAnimationListener, mUnshrinkAnimationListener; 176 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 177 private ShrinkState mShrinkState; 178 private boolean mWasSpringLoadedOnDragExit = false; 179 private boolean mWaitingToShrink = false; 180 private ShrinkState mWaitingToShrinkState; 181 private AnimatorSet mAnimator; 182 183 /** Is the user is dragging an item near the edge of a page? */ 184 private boolean mInScrollArea = false; 185 186 /** If mInScrollArea is true, the direction of the scroll. */ 187 private int mPendingScrollDirection = DragController.SCROLL_NONE; 188 189 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 190 private Bitmap mDragOutline = null; 191 private final Rect mTempRect = new Rect(); 192 private final int[] mTempXY = new int[2]; 193 194 private ValueAnimator mDropAnim = null; 195 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 196 private View mDropView = null; 197 private int[] mDropViewPos = new int[] { -1, -1 }; 198 199 // Paint used to draw external drop outline 200 private final Paint mExternalDragOutlinePaint = new Paint(); 201 202 /** Used to trigger an animation as soon as the workspace stops scrolling. */ 203 private Animator mAnimOnPageEndMoving = null; 204 205 // Camera and Matrix used to determine the final position of a neighboring CellLayout 206 private final Matrix mMatrix = new Matrix(); 207 private final Camera mCamera = new Camera(); 208 private final float mTempFloat2[] = new float[2]; 209 210 /** 211 * Used to inflate the Workspace from XML. 212 * 213 * @param context The application's context. 214 * @param attrs The attributes set containing the Workspace's customization values. 215 */ 216 public Workspace(Context context, AttributeSet attrs) { 217 this(context, attrs, 0); 218 } 219 220 /** 221 * Used to inflate the Workspace from XML. 222 * 223 * @param context The application's context. 224 * @param attrs The attributes set containing the Workspace's customization values. 225 * @param defStyle Unused. 226 */ 227 public Workspace(Context context, AttributeSet attrs, int defStyle) { 228 super(context, attrs, defStyle); 229 mContentIsRefreshable = false; 230 231 if (!LauncherApplication.isScreenXLarge()) { 232 mFadeInAdjacentScreens = false; 233 } 234 235 mWallpaperManager = WallpaperManager.getInstance(context); 236 237 TypedArray a = context.obtainStyledAttributes(attrs, 238 R.styleable.Workspace, defStyle, 0); 239 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 240 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 241 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 242 a.recycle(); 243 244 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 245 setHapticFeedbackEnabled(false); 246 247 initWorkspace(); 248 } 249 250 /** 251 * Initializes various states for this workspace. 252 */ 253 protected void initWorkspace() { 254 Context context = getContext(); 255 mCurrentPage = mDefaultPage; 256 Launcher.setScreen(mCurrentPage); 257 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 258 mIconCache = app.getIconCache(); 259 mExternalDragOutlinePaint.setAntiAlias(true); 260 setWillNotDraw(false); 261 262 try { 263 final Resources res = getResources(); 264 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 265 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 266 } catch (Resources.NotFoundException e) { 267 // In this case, we will skip drawing background protection 268 } 269 270 mUnshrinkAnimationListener = new LauncherAnimatorListenerAdapter() { 271 @Override 272 public void onAnimationStart(Animator animation) { 273 mIsInUnshrinkAnimation = true; 274 } 275 @Override 276 public void onAnimationEndOrCancel(Animator animation) { 277 mIsInUnshrinkAnimation = false; 278 if (mShrinkState != ShrinkState.SPRING_LOADED) { 279 mDrawCustomizeTrayBackground = false; 280 } 281 } 282 }; 283 mSnapVelocity = 600; 284 } 285 286 @Override 287 protected int getScrollMode() { 288 if (LauncherApplication.isScreenXLarge()) { 289 return SmoothPagedView.X_LARGE_MODE; 290 } else { 291 return SmoothPagedView.DEFAULT_MODE; 292 } 293 } 294 295 @Override 296 public void addView(View child, int index, LayoutParams params) { 297 if (!(child instanceof CellLayout)) { 298 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 299 } 300 ((CellLayout) child).setOnInterceptTouchListener(this); 301 super.addView(child, index, params); 302 } 303 304 @Override 305 public void addView(View child) { 306 if (!(child instanceof CellLayout)) { 307 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 308 } 309 ((CellLayout) child).setOnInterceptTouchListener(this); 310 super.addView(child); 311 } 312 313 @Override 314 public void addView(View child, int index) { 315 if (!(child instanceof CellLayout)) { 316 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 317 } 318 ((CellLayout) child).setOnInterceptTouchListener(this); 319 super.addView(child, index); 320 } 321 322 @Override 323 public void addView(View child, int width, int height) { 324 if (!(child instanceof CellLayout)) { 325 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 326 } 327 ((CellLayout) child).setOnInterceptTouchListener(this); 328 super.addView(child, width, height); 329 } 330 331 @Override 332 public void addView(View child, LayoutParams params) { 333 if (!(child instanceof CellLayout)) { 334 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 335 } 336 ((CellLayout) child).setOnInterceptTouchListener(this); 337 super.addView(child, params); 338 } 339 340 /** 341 * @return The open folder on the current screen, or null if there is none 342 */ 343 Folder getOpenFolder() { 344 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 345 int count = currentPage.getChildCount(); 346 for (int i = 0; i < count; i++) { 347 View child = currentPage.getChildAt(i); 348 if (child instanceof Folder) { 349 Folder folder = (Folder) child; 350 if (folder.getInfo().opened) 351 return folder; 352 } 353 } 354 return null; 355 } 356 357 ArrayList<Folder> getOpenFolders() { 358 final int screenCount = getChildCount(); 359 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 360 361 for (int screen = 0; screen < screenCount; screen++) { 362 CellLayout currentPage = (CellLayout) getChildAt(screen); 363 int count = currentPage.getChildCount(); 364 for (int i = 0; i < count; i++) { 365 View child = currentPage.getChildAt(i); 366 if (child instanceof Folder) { 367 Folder folder = (Folder) child; 368 if (folder.getInfo().opened) 369 folders.add(folder); 370 break; 371 } 372 } 373 } 374 return folders; 375 } 376 377 boolean isDefaultPageShowing() { 378 return mCurrentPage == mDefaultPage; 379 } 380 381 /** 382 * Sets the current screen. 383 * 384 * @param currentPage 385 */ 386 @Override 387 void setCurrentPage(int currentPage) { 388 super.setCurrentPage(currentPage); 389 updateWallpaperOffset(mScrollX); 390 } 391 392 /** 393 * Adds the specified child in the specified screen. The position and dimension of 394 * the child are defined by x, y, spanX and spanY. 395 * 396 * @param child The child to add in one of the workspace's screens. 397 * @param screen The screen in which to add the child. 398 * @param x The X position of the child in the screen's grid. 399 * @param y The Y position of the child in the screen's grid. 400 * @param spanX The number of cells spanned horizontally by the child. 401 * @param spanY The number of cells spanned vertically by the child. 402 */ 403 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 404 addInScreen(child, screen, x, y, spanX, spanY, false); 405 } 406 407 void addInFullScreen(View child, int screen) { 408 addInScreen(child, screen, 0, 0, -1, -1); 409 } 410 411 /** 412 * Adds the specified child in the specified screen. The position and dimension of 413 * the child are defined by x, y, spanX and spanY. 414 * 415 * @param child The child to add in one of the workspace's screens. 416 * @param screen The screen in which to add the child. 417 * @param x The X position of the child in the screen's grid. 418 * @param y The Y position of the child in the screen's grid. 419 * @param spanX The number of cells spanned horizontally by the child. 420 * @param spanY The number of cells spanned vertically by the child. 421 * @param insert When true, the child is inserted at the beginning of the children list. 422 */ 423 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 424 if (screen < 0 || screen >= getChildCount()) { 425 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 426 + " (was " + screen + "); skipping child"); 427 return; 428 } 429 430 final CellLayout group = (CellLayout) getChildAt(screen); 431 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 432 if (lp == null) { 433 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 434 } else { 435 lp.cellX = x; 436 lp.cellY = y; 437 lp.cellHSpan = spanX; 438 lp.cellVSpan = spanY; 439 } 440 441 // Get the canonical child id to uniquely represent this view in this screen 442 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 443 boolean markCellsAsOccupied = !(child instanceof Folder); 444 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 445 // TODO: This branch occurs when the workspace is adding views 446 // outside of the defined grid 447 // maybe we should be deleting these items from the LauncherModel? 448 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 449 } 450 451 if (!(child instanceof Folder)) { 452 child.setHapticFeedbackEnabled(false); 453 child.setOnLongClickListener(mLongClickListener); 454 } 455 if (child instanceof DropTarget) { 456 mDragController.addDropTarget((DropTarget) child); 457 } 458 } 459 460 public boolean onTouch(View v, MotionEvent event) { 461 // this is an intercepted event being forwarded from a cell layout 462 if (mIsSmall || mIsInUnshrinkAnimation) { 463 // Only allow clicks on a CellLayout if it is visible 464 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 465 mLauncher.onWorkspaceClick((CellLayout) v); 466 } 467 return true; 468 } else if (!mPageMoving) { 469 if (v == getChildAt(mCurrentPage - 1)) { 470 snapToPage(mCurrentPage - 1); 471 return true; 472 } else if (v == getChildAt(mCurrentPage + 1)) { 473 snapToPage(mCurrentPage + 1); 474 return true; 475 } 476 } 477 return false; 478 } 479 480 protected void onWindowVisibilityChanged (int visibility) { 481 mLauncher.onWindowVisibilityChanged(visibility); 482 } 483 484 @Override 485 public boolean dispatchUnhandledMove(View focused, int direction) { 486 if (mIsSmall || mIsInUnshrinkAnimation) { 487 // when the home screens are shrunken, shouldn't allow side-scrolling 488 return false; 489 } 490 return super.dispatchUnhandledMove(focused, direction); 491 } 492 493 @Override 494 public boolean onInterceptTouchEvent(MotionEvent ev) { 495 if (mIsSmall || mIsInUnshrinkAnimation) { 496 if (mLauncher.isAllAppsVisible() && 497 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 498 // Intercept this event so we can show the workspace in full view 499 // when it is clicked on and it is small 500 return true; 501 } 502 return false; 503 } 504 return super.onInterceptTouchEvent(ev); 505 } 506 507 @Override 508 protected void determineScrollingStart(MotionEvent ev) { 509 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 510 } 511 512 protected void onPageBeginMoving() { 513 if (mNextPage != INVALID_PAGE) { 514 // we're snapping to a particular screen 515 enableChildrenCache(mCurrentPage, mNextPage); 516 } else { 517 // this is when user is actively dragging a particular screen, they might 518 // swipe it either left or right (but we won't advance by more than one screen) 519 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 520 } 521 showOutlines(); 522 mPageMoving = true; 523 } 524 525 protected void onPageEndMoving() { 526 clearChildrenCache(); 527 // Hide the outlines, as long as we're not dragging 528 if (!mDragController.dragging()) { 529 hideOutlines(); 530 } 531 // Check for an animation that's waiting to be started 532 if (mAnimOnPageEndMoving != null) { 533 mAnimOnPageEndMoving.start(); 534 mAnimOnPageEndMoving = null; 535 } 536 mOverScrollMaxBackgroundAlpha = 0.0f; 537 mOverScrollPageIndex = -1; 538 mPageMoving = false; 539 } 540 541 @Override 542 protected void notifyPageSwitchListener() { 543 super.notifyPageSwitchListener(); 544 545 if (mPreviousIndicator != null) { 546 // if we know the next page, we show the indication for it right away; it looks 547 // weird if the indicators are lagging 548 int page = mNextPage; 549 if (page == INVALID_PAGE) { 550 page = mCurrentPage; 551 } 552 mPreviousIndicator.setLevel(page); 553 mNextIndicator.setLevel(page); 554 } 555 Launcher.setScreen(mCurrentPage); 556 }; 557 558 private void updateWallpaperOffset(int scrollRange) { 559 final boolean isStaticWallpaper = (mWallpaperManager != null) && 560 (mWallpaperManager.getWallpaperInfo() == null); 561 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 562 IBinder token = getWindowToken(); 563 if (token != null) { 564 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 565 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 566 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 567 } 568 } 569 } 570 571 public void showOutlines() { 572 if (!mIsSmall && !mIsInUnshrinkAnimation) { 573 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 574 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 575 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 576 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 577 mChildrenOutlineFadeInAnimation.start(); 578 } 579 } 580 581 public void hideOutlines() { 582 if (!mIsSmall && !mIsInUnshrinkAnimation) { 583 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 584 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 585 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 586 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 587 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 588 mChildrenOutlineFadeOutAnimation.start(); 589 } 590 } 591 592 public void setChildrenOutlineAlpha(float alpha) { 593 mChildrenOutlineAlpha = alpha; 594 for (int i = 0; i < getChildCount(); i++) { 595 CellLayout cl = (CellLayout) getChildAt(i); 596 cl.setBackgroundAlpha(alpha); 597 } 598 } 599 600 public float getChildrenOutlineAlpha() { 601 return mChildrenOutlineAlpha; 602 } 603 604 private void showBackgroundGradientForAllApps() { 605 showBackgroundGradient(); 606 mDrawCustomizeTrayBackground = false; 607 } 608 609 private void showBackgroundGradientForCustomizeTray() { 610 showBackgroundGradient(); 611 mDrawCustomizeTrayBackground = true; 612 } 613 614 private void showBackgroundGradient() { 615 if (mBackground == null) return; 616 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 617 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 618 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 619 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 620 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 621 mBackgroundFadeInAnimation.start(); 622 } 623 624 private void hideBackgroundGradient() { 625 if (mBackground == null) return; 626 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 627 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 628 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 629 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 630 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 631 mBackgroundFadeOutAnimation.start(); 632 } 633 634 public void setBackgroundAlpha(float alpha) { 635 mBackgroundAlpha = alpha; 636 invalidate(); 637 } 638 639 public float getBackgroundAlpha() { 640 return mBackgroundAlpha; 641 } 642 643 /** 644 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 645 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 646 * as being larger. This method computes what offset the rotated view should be translated 647 * in order to minimize this perceived gap. 648 * @param degrees Angle of the view 649 * @param width Width of the view 650 * @param height Height of the view 651 * @return Offset to be used in a View.setTranslationX() call 652 */ 653 private float getOffsetXForRotation(float degrees, int width, int height) { 654 mMatrix.reset(); 655 mCamera.save(); 656 mCamera.rotateY(Math.abs(degrees)); 657 mCamera.getMatrix(mMatrix); 658 mCamera.restore(); 659 660 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 661 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 662 mTempFloat2[0] = width; 663 mTempFloat2[1] = height; 664 mMatrix.mapPoints(mTempFloat2); 665 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 666 } 667 668 float backgroundAlphaInterpolator(float r) { 669 float pivotA = 0.1f; 670 float pivotB = 0.4f; 671 if (r < pivotA) { 672 return 0; 673 } else if (r > pivotB) { 674 return 1.0f; 675 } else { 676 return (r - pivotA)/(pivotB - pivotA); 677 } 678 } 679 680 float overScrollBackgroundAlphaInterpolator(float r) { 681 float threshold = 0.08f; 682 683 if (r > mOverScrollMaxBackgroundAlpha) { 684 mOverScrollMaxBackgroundAlpha = r; 685 } else if (r < mOverScrollMaxBackgroundAlpha) { 686 r = mOverScrollMaxBackgroundAlpha; 687 } 688 689 return Math.min(r / threshold, 1.0f); 690 } 691 692 @Override 693 protected void screenScrolled(int screenCenter) { 694 final int halfScreenSize = getMeasuredWidth() / 2; 695 696 for (int i = 0; i < getChildCount(); i++) { 697 CellLayout cl = (CellLayout) getChildAt(i); 698 if (cl != null) { 699 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 700 int delta = screenCenter - (getChildOffset(i) - 701 getRelativeChildOffset(i) + halfScreenSize); 702 703 float scrollProgress = delta / (totalDistance * 1.0f); 704 scrollProgress = Math.min(scrollProgress, 1.0f); 705 scrollProgress = Math.max(scrollProgress, -1.0f); 706 707 // If the current page (i) is being overscrolled, we use a different 708 // set of rules for setting the background alpha multiplier. 709 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 710 i == getChildCount() -1 )) { 711 cl.setBackgroundAlphaMultiplier( 712 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 713 mOverScrollPageIndex = i; 714 } else if (mOverScrollPageIndex != i) { 715 cl.setBackgroundAlphaMultiplier( 716 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 717 718 } 719 720 float rotation = WORKSPACE_ROTATION * scrollProgress; 721 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 722 cl.setTranslationX(translationX); 723 724 cl.setRotationY(rotation); 725 } 726 } 727 } 728 729 protected void onAttachedToWindow() { 730 super.onAttachedToWindow(); 731 computeScroll(); 732 mDragController.setWindowToken(getWindowToken()); 733 } 734 735 @Override 736 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 737 super.onLayout(changed, left, top, right, bottom); 738 739 // if shrinkToBottom() is called on initialization, it has to be deferred 740 // until after the first call to onLayout so that it has the correct width 741 if (mWaitingToShrink) { 742 // shrink can trigger a synchronous onLayout call, so we 743 // post this to avoid a stack overflow / tangled onLayout calls 744 post(new Runnable() { 745 public void run() { 746 shrink(mWaitingToShrinkState, false); 747 mWaitingToShrink = false; 748 } 749 }); 750 } 751 752 if (LauncherApplication.isInPlaceRotationEnabled()) { 753 // When the device is rotated, the scroll position of the current screen 754 // needs to be refreshed 755 setCurrentPage(getCurrentPage()); 756 } 757 } 758 759 @Override 760 protected void onDraw(Canvas canvas) { 761 // Draw the background gradient if necessary 762 if (mBackground != null && mBackgroundAlpha > 0.0f) { 763 int alpha = (int) (mBackgroundAlpha * 255); 764 mBackground.setAlpha(alpha); 765 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), getMeasuredHeight()); 766 mBackground.draw(canvas); 767 if (mDrawCustomizeTrayBackground) { 768 // Find out where to offset the gradient for the customization tray content 769 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 770 final Matrix m = mCustomizationDrawer.getMatrix(); 771 mCustomizationDrawerTransformedPos[0] = 0.0f; 772 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 773 m.mapPoints(mCustomizationDrawerTransformedPos); 774 775 // Draw the bg glow behind the gradient 776 mCustomizeTrayBackground.setAlpha(alpha); 777 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 778 getMeasuredHeight()); 779 mCustomizeTrayBackground.draw(canvas); 780 781 // Draw the bg gradient 782 final int offset = (int) (mCustomizationDrawerPos[1] + 783 mCustomizationDrawerTransformedPos[1]); 784 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 785 offset + getMeasuredHeight()); 786 mBackground.draw(canvas); 787 } 788 } 789 super.onDraw(canvas); 790 } 791 792 @Override 793 protected void dispatchDraw(Canvas canvas) { 794 if (mIsSmall || mIsInUnshrinkAnimation) { 795 // Draw all the workspaces if we're small 796 final int pageCount = getChildCount(); 797 final long drawingTime = getDrawingTime(); 798 for (int i = 0; i < pageCount; i++) { 799 final View page = (View) getChildAt(i); 800 801 drawChild(canvas, page, drawingTime); 802 } 803 } else { 804 super.dispatchDraw(canvas); 805 806 final int width = getWidth(); 807 final int height = getHeight(); 808 809 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 810 if (mInScrollArea && (height > width)) { 811 final int pageHeight = getChildAt(0).getHeight(); 812 813 // This determines the height of the glowing edge: 90% of the page height 814 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 815 816 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 817 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 818 819 if (leftPage != null && leftPage.getHover()) { 820 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 821 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 822 d.draw(canvas); 823 } else if (rightPage != null && rightPage.getHover()) { 824 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 825 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 826 d.draw(canvas); 827 } 828 } 829 830 if (mDropView != null) { 831 // We are animating an item that was just dropped on the home screen. 832 // Render its View in the current animation position. 833 canvas.save(Canvas.MATRIX_SAVE_FLAG); 834 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 835 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 836 canvas.translate(xPos, yPos); 837 mDropView.draw(canvas); 838 canvas.restore(); 839 } 840 } 841 } 842 843 @Override 844 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 845 if (!mLauncher.isAllAppsVisible()) { 846 final Folder openFolder = getOpenFolder(); 847 if (openFolder != null) { 848 return openFolder.requestFocus(direction, previouslyFocusedRect); 849 } else { 850 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 851 } 852 } 853 return false; 854 } 855 856 @Override 857 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 858 if (!mLauncher.isAllAppsVisible()) { 859 final Folder openFolder = getOpenFolder(); 860 if (openFolder != null) { 861 openFolder.addFocusables(views, direction); 862 } else { 863 super.addFocusables(views, direction, focusableMode); 864 } 865 } 866 } 867 868 @Override 869 public boolean dispatchTouchEvent(MotionEvent ev) { 870 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 871 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 872 // ie when you click on a mini-screen, it zooms back to that screen) 873 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 874 return false; 875 } 876 } 877 878 return super.dispatchTouchEvent(ev); 879 } 880 881 void enableChildrenCache(int fromPage, int toPage) { 882 if (fromPage > toPage) { 883 final int temp = fromPage; 884 fromPage = toPage; 885 toPage = temp; 886 } 887 888 final int screenCount = getChildCount(); 889 890 fromPage = Math.max(fromPage, 0); 891 toPage = Math.min(toPage, screenCount - 1); 892 893 for (int i = fromPage; i <= toPage; i++) { 894 final CellLayout layout = (CellLayout) getChildAt(i); 895 layout.setChildrenDrawnWithCacheEnabled(true); 896 layout.setChildrenDrawingCacheEnabled(true); 897 } 898 } 899 900 void clearChildrenCache() { 901 final int screenCount = getChildCount(); 902 for (int i = 0; i < screenCount; i++) { 903 final CellLayout layout = (CellLayout) getChildAt(i); 904 layout.setChildrenDrawnWithCacheEnabled(false); 905 } 906 } 907 908 @Override 909 public boolean onTouchEvent(MotionEvent ev) { 910 if (mLauncher.isAllAppsVisible()) { 911 // Cancel any scrolling that is in progress. 912 if (!mScroller.isFinished()) { 913 mScroller.abortAnimation(); 914 } 915 setCurrentPage(mCurrentPage); 916 917 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 918 mLauncher.showWorkspace(true); 919 // Let the events fall through to the CellLayouts because if they are not 920 // hit, then we get a crash due to a missing ACTION_DOWN touch event 921 } 922 923 return false; // We don't want the events 924 } 925 926 return super.onTouchEvent(ev); 927 } 928 929 @Override 930 protected void onWallpaperTap(MotionEvent ev) { 931 final int[] position = mTempCell; 932 getLocationOnScreen(position); 933 934 int pointerIndex = ev.getActionIndex(); 935 position[0] += (int) ev.getX(pointerIndex); 936 position[1] += (int) ev.getY(pointerIndex); 937 938 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 939 ev.getAction() == MotionEvent.ACTION_UP 940 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 941 position[0], position[1], 0, null); 942 } 943 944 public boolean isSmall() { 945 return mIsSmall; 946 } 947 948 private float getYScaleForScreen(int screen) { 949 int x = Math.abs(screen - 2); 950 951 // TODO: This should be generalized for use with arbitrary rotation angles. 952 switch(x) { 953 case 0: return EXTRA_SCALE_FACTOR_0; 954 case 1: return EXTRA_SCALE_FACTOR_1; 955 case 2: return EXTRA_SCALE_FACTOR_2; 956 } 957 return 1.0f; 958 } 959 960 public void shrink(ShrinkState shrinkState) { 961 shrink(shrinkState, true); 962 } 963 964 // we use this to shrink the workspace for the all apps view and the customize view 965 public void shrink(ShrinkState shrinkState, boolean animated) { 966 if (mFirstLayout) { 967 // (mFirstLayout == "first layout has not happened yet") 968 // if we get a call to shrink() as part of our initialization (for example, if 969 // Launcher is started in All Apps mode) then we need to wait for a layout call 970 // to get our width so we can layout the mini-screen views correctly 971 mWaitingToShrink = true; 972 mWaitingToShrinkState = shrinkState; 973 return; 974 } 975 mIsSmall = true; 976 mShrinkState = shrinkState; 977 978 // Stop any scrolling, move to the current page right away 979 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 980 if (!mIsDragInProcess) { 981 updateWhichPagesAcceptDrops(mShrinkState); 982 } 983 984 // we intercept and reject all touch events when we're small, so be sure to reset the state 985 mTouchState = TOUCH_STATE_REST; 986 mActivePointerId = INVALID_POINTER; 987 988 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 989 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 990 currentPage.setBackgroundAlpha(0.0f); 991 } 992 currentPage.setBackgroundAlphaMultiplier(1.0f); 993 994 final Resources res = getResources(); 995 final int screenWidth = getWidth(); 996 final int screenHeight = getHeight(); 997 998 // Making the assumption that all pages have the same width as the 0th 999 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1000 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1001 1002 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1003 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1004 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1005 1006 final int screenCount = getChildCount(); 1007 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1008 1009 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1010 float newY = (isPortrait ? 1011 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1012 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1013 float finalAlpha = 1.0f; 1014 float extraShrinkFactor = 1.0f; 1015 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1016 newY = screenHeight - newY - scaledPageHeight; 1017 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1018 1019 // We shrink and disappear to nothing in the case of all apps 1020 // (which is when we shrink to the bottom) 1021 newY = screenHeight - newY - scaledPageHeight; 1022 finalAlpha = 0.0f; 1023 } else if (shrinkState == ShrinkState.MIDDLE) { 1024 newY = screenHeight / 2 - scaledPageHeight / 2; 1025 finalAlpha = 1.0f; 1026 } else if (shrinkState == ShrinkState.TOP) { 1027 newY = (isPortrait ? 1028 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1029 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1030 } 1031 1032 // We animate all the screens to the centered position in workspace 1033 // At the same time, the screens become greyed/dimmed 1034 1035 // newX is initialized to the left-most position of the centered screens 1036 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1037 1038 // We are going to scale about the center of the view, so we need to adjust the positions 1039 // of the views accordingly 1040 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1041 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1042 1043 if (mAnimator != null) { 1044 mAnimator.cancel(); 1045 } 1046 mAnimator = new AnimatorSet(); 1047 for (int i = 0; i < screenCount; i++) { 1048 CellLayout cl = (CellLayout) getChildAt(i); 1049 1050 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1051 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1052 float rotationScaleY = getYScaleForScreen(i); 1053 1054 if (animated) { 1055 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 1056 1057 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1058 PropertyValuesHolder.ofFloat("x", newX), 1059 PropertyValuesHolder.ofFloat("y", newY), 1060 PropertyValuesHolder.ofFloat("scaleX", 1061 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1062 PropertyValuesHolder.ofFloat("scaleY", 1063 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1064 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1065 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1066 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1067 1068 animWithInterpolator.setDuration(duration); 1069 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1070 mAnimator.playTogether(animWithInterpolator); 1071 } else { 1072 cl.setX((int)newX); 1073 cl.setY((int)newY); 1074 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1075 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1076 cl.setBackgroundAlpha(finalAlpha); 1077 cl.setAlpha(finalAlpha); 1078 cl.setRotationY(rotation); 1079 } 1080 // increment newX for the next screen 1081 newX += scaledPageWidth + extraScaledSpacing; 1082 } 1083 setLayoutScale(1.0f); 1084 if (animated) { 1085 mAnimator.start(); 1086 } 1087 setChildrenDrawnWithCacheEnabled(true); 1088 1089 if (shrinkState == ShrinkState.TOP) { 1090 showBackgroundGradientForCustomizeTray(); 1091 } else { 1092 showBackgroundGradientForAllApps(); 1093 } 1094 } 1095 1096 /* 1097 * This interpolator emulates the rate at which the perceived scale of an object changes 1098 * as its distance from a camera increases. When this interpolator is applied to a scale 1099 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1100 * from the camera. 1101 */ 1102 static class ZInterpolator implements TimeInterpolator { 1103 private float focalLength; 1104 1105 public ZInterpolator(float foc) { 1106 focalLength = foc; 1107 } 1108 1109 public float getInterpolation(float input) { 1110 return (1.0f - focalLength / (focalLength + input)) / 1111 (1.0f - focalLength / (focalLength + 1.0f)); 1112 } 1113 } 1114 1115 /* 1116 * The exact reverse of ZInterpolator. 1117 */ 1118 static class InverseZInterpolator implements TimeInterpolator { 1119 private ZInterpolator zInterpolator; 1120 public InverseZInterpolator(float foc) { 1121 zInterpolator = new ZInterpolator(foc); 1122 } 1123 public float getInterpolation(float input) { 1124 return 1 - zInterpolator.getInterpolation(1 - input); 1125 } 1126 } 1127 1128 /* 1129 * ZInterpolator compounded with an ease-out. 1130 */ 1131 static class ZoomOutInterpolator implements TimeInterpolator { 1132 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1133 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1134 1135 public float getInterpolation(float input) { 1136 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1137 } 1138 } 1139 1140 /* 1141 * InvereZInterpolator compounded with an ease-out. 1142 */ 1143 static class ZoomInInterpolator implements TimeInterpolator { 1144 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1145 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1146 1147 public float getInterpolation(float input) { 1148 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1149 } 1150 } 1151 1152 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1153 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1154 1155 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1156 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1157 } 1158 1159 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1160 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1161 } 1162 1163 private void updateWhichPagesAcceptDropsHelper( 1164 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1165 final int screenCount = getChildCount(); 1166 for (int i = 0; i < screenCount; i++) { 1167 CellLayout cl = (CellLayout) getChildAt(i); 1168 1169 switch (state) { 1170 case TOP: 1171 if (!isDragHappening) { 1172 boolean showDropHighlight = i == mCurrentPage; 1173 cl.setAcceptsDrops(showDropHighlight); 1174 break; 1175 } 1176 // otherwise, fall through below and mark non-full screens as accepting drops 1177 case BOTTOM_HIDDEN: 1178 case BOTTOM_VISIBLE: 1179 if (!isDragHappening) { 1180 // even if a drag isn't happening, we don't want to show a screen as 1181 // accepting drops if it doesn't have at least one free cell 1182 spanX = 1; 1183 spanY = 1; 1184 } 1185 // the page accepts drops if we can find at least one empty spot 1186 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1187 break; 1188 default: 1189 throw new RuntimeException( 1190 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1191 } 1192 } 1193 } 1194 1195 /* 1196 * 1197 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1198 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1199 * 1200 * These methods mark the appropriate pages as accepting drops (which alters their visual 1201 * appearance). 1202 * 1203 */ 1204 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1205 mIsDragInProcess = true; 1206 1207 final Canvas canvas = new Canvas(); 1208 1209 // We need to add extra padding to the bitmap to make room for the glow effect 1210 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1211 1212 // The outline is used to visualize where the item will land if dropped 1213 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1214 1215 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1216 } 1217 1218 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1219 // never dragged over 1220 public void onDragStopped() { 1221 mIsDragInProcess = false; 1222 updateWhichPagesAcceptDrops(mShrinkState); 1223 } 1224 1225 @Override 1226 protected boolean handlePagingClicks() { 1227 return true; 1228 } 1229 1230 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1231 public void unshrink(CellLayout clThatWasClicked) { 1232 unshrink(clThatWasClicked, false); 1233 } 1234 1235 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1236 int newCurrentPage = indexOfChild(clThatWasClicked); 1237 if (mIsSmall) { 1238 if (springLoaded) { 1239 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1240 } 1241 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1242 unshrink(true, springLoaded); 1243 } 1244 } 1245 1246 1247 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1248 mShrinkState = ShrinkState.SPRING_LOADED; 1249 unshrink(clThatWasClicked, true); 1250 mDragTargetLayout.onDragEnter(); 1251 } 1252 1253 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1254 shrink(shrinkState); 1255 if (mDragTargetLayout != null) { 1256 mDragTargetLayout.onDragExit(); 1257 } 1258 } 1259 1260 void unshrink(boolean animated) { 1261 unshrink(animated, false); 1262 } 1263 1264 void unshrink(boolean animated, boolean springLoaded) { 1265 if (mIsSmall) { 1266 float finalScaleFactor = 1.0f; 1267 float finalBackgroundAlpha = 0.0f; 1268 if (springLoaded) { 1269 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1270 finalBackgroundAlpha = 1.0f; 1271 } else { 1272 mIsSmall = false; 1273 } 1274 if (mAnimator != null) { 1275 mAnimator.cancel(); 1276 } 1277 1278 mAnimator = new AnimatorSet(); 1279 final int screenCount = getChildCount(); 1280 1281 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1282 for (int i = 0; i < screenCount; i++) { 1283 final CellLayout cl = (CellLayout)getChildAt(i); 1284 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1285 float rotation = 0.0f; 1286 1287 if (i < mCurrentPage) { 1288 rotation = WORKSPACE_ROTATION; 1289 } else if (i > mCurrentPage) { 1290 rotation = -WORKSPACE_ROTATION; 1291 } 1292 1293 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1294 1295 if (animated) { 1296 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1297 PropertyValuesHolder.ofFloat("translationX", translation), 1298 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1299 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1300 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1301 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1302 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1303 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1304 animWithInterpolator.setDuration(duration); 1305 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1306 mAnimator.playTogether(animWithInterpolator); 1307 } else { 1308 cl.setTranslationX(translation); 1309 cl.setTranslationY(0.0f); 1310 cl.setScaleX(finalScaleFactor); 1311 cl.setScaleY(finalScaleFactor); 1312 cl.setBackgroundAlpha(0.0f); 1313 cl.setAlpha(finalAlphaValue); 1314 cl.setRotationY(rotation); 1315 } 1316 } 1317 1318 if (animated) { 1319 // If we call this when we're not animated, onAnimationEnd is never called on 1320 // the listener; make sure we only use the listener when we're actually animating 1321 mAnimator.addListener(mUnshrinkAnimationListener); 1322 mAnimator.start(); 1323 } 1324 } 1325 1326 if (!springLoaded) { 1327 hideBackgroundGradient(); 1328 } 1329 } 1330 1331 /** 1332 * Draw the View v into the given Canvas. 1333 * 1334 * @param v the view to draw 1335 * @param destCanvas the canvas to draw on 1336 * @param padding the horizontal and vertical padding to use when drawing 1337 */ 1338 private void drawDragView(View v, Canvas destCanvas, int padding) { 1339 final Rect clipRect = mTempRect; 1340 v.getDrawingRect(clipRect); 1341 1342 // For a TextView, adjust the clip rect so that we don't include the text label 1343 if (v instanceof BubbleTextView) { 1344 final BubbleTextView tv = (BubbleTextView) v; 1345 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1346 tv.getLayout().getLineTop(0); 1347 } else if (v instanceof TextView) { 1348 final TextView tv = (TextView) v; 1349 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1350 tv.getLayout().getLineTop(0); 1351 } 1352 1353 // Draw the View into the bitmap. 1354 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1355 // they set scrollX and scrollY to large values to achieve centered text 1356 1357 destCanvas.save(); 1358 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1359 destCanvas.clipRect(clipRect, Op.REPLACE); 1360 v.draw(destCanvas); 1361 destCanvas.restore(); 1362 } 1363 1364 /** 1365 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1366 * Responsibility for the bitmap is transferred to the caller. 1367 */ 1368 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1369 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1370 final Bitmap b = Bitmap.createBitmap( 1371 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1372 1373 canvas.setBitmap(b); 1374 drawDragView(v, canvas, padding); 1375 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1376 return b; 1377 } 1378 1379 /** 1380 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1381 * Responsibility for the bitmap is transferred to the caller. 1382 */ 1383 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1384 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1385 final Bitmap b = Bitmap.createBitmap( 1386 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1387 1388 canvas.setBitmap(b); 1389 canvas.drawBitmap(orig, 0, 0, new Paint()); 1390 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1391 1392 return b; 1393 } 1394 1395 /** 1396 * Creates a drag outline to represent a drop (that we don't have the actual information for 1397 * yet). May be changed in the future to alter the drop outline slightly depending on the 1398 * clip description mime data. 1399 */ 1400 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1401 Resources r = getResources(); 1402 final int outlineColor = r.getColor(R.color.drag_outline_color); 1403 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1404 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1405 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1406 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1407 final Bitmap b = Bitmap.createBitmap( 1408 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1409 1410 canvas.setBitmap(b); 1411 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1412 rectRadius, rectRadius, mExternalDragOutlinePaint); 1413 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1414 return b; 1415 } 1416 1417 /** 1418 * Returns a new bitmap to show when the given View is being dragged around. 1419 * Responsibility for the bitmap is transferred to the caller. 1420 */ 1421 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1422 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1423 final Bitmap b = Bitmap.createBitmap( 1424 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1425 1426 canvas.setBitmap(b); 1427 canvas.drawBitmap(mDragOutline, 0, 0, null); 1428 drawDragView(v, canvas, padding); 1429 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1430 1431 return b; 1432 } 1433 1434 void startDrag(CellLayout.CellInfo cellInfo) { 1435 View child = cellInfo.cell; 1436 1437 // Make sure the drag was started by a long press as opposed to a long click. 1438 if (!child.isInTouchMode()) { 1439 return; 1440 } 1441 1442 mDragInfo = cellInfo; 1443 mDragInfo.screen = mCurrentPage; 1444 1445 CellLayout current = getCurrentDropLayout(); 1446 1447 current.onDragChild(child); 1448 1449 child.clearFocus(); 1450 child.setPressed(false); 1451 1452 final Canvas canvas = new Canvas(); 1453 1454 // We need to add extra padding to the bitmap to make room for the glow effect 1455 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1456 1457 // The outline is used to visualize where the item will land if dropped 1458 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1459 1460 // The drag bitmap follows the touch point around on the screen 1461 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1462 1463 final int bmpWidth = b.getWidth(); 1464 final int bmpHeight = b.getHeight(); 1465 child.getLocationOnScreen(mTempXY); 1466 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1467 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1468 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1469 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1470 b.recycle(); 1471 } 1472 1473 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1474 boolean insertAtFirst, int intersectX, int intersectY) { 1475 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1476 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1477 1478 final int[] cellXY = new int[2]; 1479 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1480 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1481 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1482 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1483 cellXY[0], cellXY[1]); 1484 } 1485 1486 private void setPositionForDropAnimation( 1487 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1488 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1489 1490 // Based on the position of the drag view, find the top left of the original view 1491 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1492 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1493 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1494 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1495 1496 // Set its old pos (in the new parent's coordinates); it will be animated 1497 // in animateViewIntoPosition after the next layout pass 1498 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1499 lp.oldY = viewY - (parent.getTop() - mScrollY); 1500 } 1501 1502 public void animateViewIntoPosition(final View view) { 1503 final CellLayout parent = (CellLayout) view.getParent(); 1504 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1505 1506 // Convert the animation params to be relative to the Workspace, not the CellLayout 1507 final int fromX = lp.oldX + parent.getLeft(); 1508 final int fromY = lp.oldY + parent.getTop(); 1509 1510 final int dx = lp.x - lp.oldX; 1511 final int dy = lp.y - lp.oldY; 1512 1513 // Calculate the duration of the animation based on the object's distance 1514 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1515 final Resources res = getResources(); 1516 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1517 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1518 if (dist < maxDist) { 1519 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1520 } 1521 1522 if (mDropAnim != null) { 1523 // This should really be end(), but that will not be called synchronously, 1524 // so instead we use LauncherAnimatorListenerAdapter.onAnimationEndOrCancel() 1525 // and call cancel() here. 1526 mDropAnim.cancel(); 1527 } 1528 mDropAnim = new ValueAnimator(); 1529 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1530 1531 // The view is invisible during the animation; we render it manually. 1532 mDropAnim.addListener(new LauncherAnimatorListenerAdapter() { 1533 public void onAnimationStart(Animator animation) { 1534 // Set this here so that we don't render it until the animation begins 1535 mDropView = view; 1536 } 1537 1538 public void onAnimationEndOrCancel(Animator animation) { 1539 if (mDropView != null) { 1540 mDropView.setVisibility(View.VISIBLE); 1541 mDropView = null; 1542 } 1543 } 1544 }); 1545 1546 mDropAnim.setDuration(duration); 1547 mDropAnim.setFloatValues(0.0f, 1.0f); 1548 mDropAnim.removeAllUpdateListeners(); 1549 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1550 public void onAnimationUpdate(ValueAnimator animation) { 1551 final float percent = (Float) animation.getAnimatedValue(); 1552 // Invalidate the old position 1553 invalidate(mDropViewPos[0], mDropViewPos[1], 1554 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1555 1556 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1557 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1558 invalidate(mDropViewPos[0], mDropViewPos[1], 1559 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1560 } 1561 }); 1562 1563 view.setVisibility(View.INVISIBLE); 1564 1565 if (!mScroller.isFinished()) { 1566 mAnimOnPageEndMoving = mDropAnim; 1567 } else { 1568 mDropAnim.start(); 1569 } 1570 } 1571 1572 /** 1573 * {@inheritDoc} 1574 */ 1575 public boolean acceptDrop(DragSource source, int x, int y, 1576 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1577 1578 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1579 if (source != this) { 1580 // Don't accept the drop if we're not over a screen at time of drop 1581 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1582 return false; 1583 } 1584 1585 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1586 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1587 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1588 1589 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1590 1591 // Don't accept the drop if there's no room for the item 1592 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1593 mLauncher.showOutOfSpaceMessage(); 1594 return false; 1595 } 1596 } 1597 return true; 1598 } 1599 1600 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1601 DragView dragView, Object dragInfo) { 1602 1603 int originX = x - xOffset; 1604 int originY = y - yOffset; 1605 1606 if (mIsSmall || mIsInUnshrinkAnimation) { 1607 // get originX and originY in the local coordinate system of the screen 1608 mTempOriginXY[0] = originX; 1609 mTempOriginXY[1] = originY; 1610 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1611 originX = (int)mTempOriginXY[0]; 1612 originY = (int)mTempOriginXY[1]; 1613 } 1614 1615 if (source != this) { 1616 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1617 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1618 } else { 1619 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1620 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1621 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1622 } 1623 } else if (mDragInfo != null) { 1624 final View cell = mDragInfo.cell; 1625 CellLayout dropTargetLayout = mDragTargetLayout; 1626 1627 // Handle the case where the user drops when in the scroll area. 1628 // This is treated as a drop on the adjacent page. 1629 if (dropTargetLayout == null && mInScrollArea) { 1630 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1631 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1632 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1633 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1634 } 1635 } 1636 1637 if (dropTargetLayout != null) { 1638 // Move internally 1639 mTargetCell = findNearestVacantArea(originX, originY, 1640 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1641 mTargetCell); 1642 1643 final int screen = (mTargetCell == null) ? 1644 mDragInfo.screen : indexOfChild(dropTargetLayout); 1645 1646 if (screen != mCurrentPage) { 1647 snapToPage(screen); 1648 } 1649 1650 if (mTargetCell != null) { 1651 if (screen != mDragInfo.screen) { 1652 // Reparent the view 1653 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1654 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1655 mDragInfo.spanX, mDragInfo.spanY); 1656 } 1657 1658 // update the item's position after drop 1659 final ItemInfo info = (ItemInfo) cell.getTag(); 1660 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1661 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1662 lp.cellX = mTargetCell[0]; 1663 lp.cellY = mTargetCell[1]; 1664 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1665 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1666 1667 LauncherModel.moveItemInDatabase(mLauncher, info, 1668 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1669 lp.cellX, lp.cellY); 1670 } 1671 } 1672 1673 final CellLayout parent = (CellLayout) cell.getParent(); 1674 1675 // Prepare it to be animated into its new position 1676 // This must be called after the view has been re-parented 1677 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1678 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1679 parent.onDropChild(cell, animateDrop); 1680 } 1681 } 1682 1683 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1684 int yOffset, DragView dragView, Object dragInfo) { 1685 mDragTargetLayout = null; // Reset the drag state 1686 1687 if (!mIsSmall) { 1688 mDragTargetLayout = getCurrentDropLayout(); 1689 mDragTargetLayout.onDragEnter(); 1690 showOutlines(); 1691 } 1692 } 1693 1694 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1695 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1696 1697 if (mIsSmall || mIsInUnshrinkAnimation) { 1698 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1699 return null; 1700 } 1701 // We may need to delegate the drag to a child view. If a 1x1 item 1702 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1703 // then drag events should be handled by that child. 1704 1705 ItemInfo item = (ItemInfo)dragInfo; 1706 CellLayout currentLayout = getCurrentDropLayout(); 1707 1708 int dragPointX, dragPointY; 1709 if (item.spanX == 1 && item.spanY == 1) { 1710 // For a 1x1, calculate the drop cell exactly as in onDragOver 1711 dragPointX = x - xOffset; 1712 dragPointY = y - yOffset; 1713 } else { 1714 // Otherwise, use the exact drag coordinates 1715 dragPointX = x; 1716 dragPointY = y; 1717 } 1718 dragPointX += mScrollX - currentLayout.getLeft(); 1719 dragPointY += mScrollY - currentLayout.getTop(); 1720 1721 // If we are dragging over a cell that contains a DropTarget that will 1722 // accept the drop, delegate to that DropTarget. 1723 final int[] cellXY = mTempCell; 1724 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1725 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1726 if (child instanceof DropTarget) { 1727 DropTarget target = (DropTarget)child; 1728 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1729 return target; 1730 } 1731 } 1732 return null; 1733 } 1734 1735 /** 1736 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1737 * in the returned structure related to the widgets that match the drop (or a null list if it is 1738 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1739 */ 1740 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1741 final LauncherModel model = mLauncher.getModel(); 1742 final ClipDescription desc = event.getClipDescription(); 1743 final int mimeTypeCount = desc.getMimeTypeCount(); 1744 for (int i = 0; i < mimeTypeCount; ++i) { 1745 final String mimeType = desc.getMimeType(i); 1746 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1747 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1748 } else { 1749 final List<WidgetMimeTypeHandlerData> widgets = 1750 model.resolveWidgetsForMimeType(mContext, mimeType); 1751 if (widgets.size() > 0) { 1752 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1753 } 1754 } 1755 } 1756 return null; 1757 } 1758 1759 /** 1760 * Global drag and drop handler 1761 */ 1762 @Override 1763 public boolean onDragEvent(DragEvent event) { 1764 final ClipDescription desc = event.getClipDescription(); 1765 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1766 final int[] pos = new int[2]; 1767 layout.getLocationOnScreen(pos); 1768 // We need to offset the drag coordinates to layout coordinate space 1769 final int x = (int) event.getX() - pos[0]; 1770 final int y = (int) event.getY() - pos[1]; 1771 1772 switch (event.getAction()) { 1773 case DragEvent.ACTION_DRAG_STARTED: { 1774 // Validate this drag 1775 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1776 if (test != null) { 1777 boolean isShortcut = (test.second == null); 1778 if (isShortcut) { 1779 // Check if we have enough space on this screen to add a new shortcut 1780 if (!layout.findCellForSpan(pos, 1, 1)) { 1781 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1782 Toast.LENGTH_SHORT).show(); 1783 return false; 1784 } 1785 } 1786 } else { 1787 // Show error message if we couldn't accept any of the items 1788 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1789 Toast.LENGTH_SHORT).show(); 1790 return false; 1791 } 1792 1793 // Create the drag outline 1794 // We need to add extra padding to the bitmap to make room for the glow effect 1795 final Canvas canvas = new Canvas(); 1796 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1797 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1798 1799 // Show the current page outlines to indicate that we can accept this drop 1800 showOutlines(); 1801 layout.setHover(true); 1802 layout.onDragEnter(); 1803 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1804 1805 return true; 1806 } 1807 case DragEvent.ACTION_DRAG_LOCATION: 1808 // Visualize the drop location 1809 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1810 return true; 1811 case DragEvent.ACTION_DROP: { 1812 // Try and add any shortcuts 1813 int newDropCount = 0; 1814 final LauncherModel model = mLauncher.getModel(); 1815 final ClipData data = event.getClipData(); 1816 1817 // We assume that the mime types are ordered in descending importance of 1818 // representation. So we enumerate the list of mime types and alert the 1819 // user if any widgets can handle the drop. Only the most preferred 1820 // representation will be handled. 1821 pos[0] = x; 1822 pos[1] = y; 1823 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1824 if (test != null) { 1825 final int index = test.first; 1826 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1827 final boolean isShortcut = (widgets == null); 1828 final String mimeType = desc.getMimeType(index); 1829 if (isShortcut) { 1830 final Intent intent = data.getItem(index).getIntent(); 1831 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1832 onDropExternal(x, y, info, layout, false); 1833 } else { 1834 if (widgets.size() == 1) { 1835 // If there is only one item, then go ahead and add and configure 1836 // that widget 1837 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1838 final PendingAddWidgetInfo createInfo = 1839 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1840 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1841 } else { 1842 // Show the widget picker dialog if there is more than one widget 1843 // that can handle this data type 1844 final InstallWidgetReceiver.WidgetListAdapter adapter = 1845 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1846 data, widgets, layout, mCurrentPage, pos); 1847 final AlertDialog.Builder builder = 1848 new AlertDialog.Builder(mContext); 1849 builder.setAdapter(adapter, adapter); 1850 builder.setCancelable(true); 1851 builder.setTitle(mContext.getString( 1852 R.string.external_drop_widget_pick_title)); 1853 builder.setIcon(R.drawable.ic_no_applications); 1854 builder.show(); 1855 } 1856 } 1857 } 1858 return true; 1859 } 1860 case DragEvent.ACTION_DRAG_ENDED: 1861 // Hide the page outlines after the drop 1862 layout.setHover(false); 1863 layout.onDragExit(); 1864 hideOutlines(); 1865 return true; 1866 } 1867 return super.onDragEvent(event); 1868 } 1869 1870 /* 1871 * 1872 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1873 * coordinate space. The argument xy is modified with the return result. 1874 * 1875 */ 1876 void mapPointFromSelfToChild(View v, float[] xy) { 1877 mapPointFromSelfToChild(v, xy, null); 1878 } 1879 1880 /* 1881 * 1882 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1883 * coordinate space. The argument xy is modified with the return result. 1884 * 1885 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1886 * computing it itself; we use this to avoid redundant matrix inversions in 1887 * findMatchingPageForDragOver 1888 * 1889 */ 1890 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1891 if (cachedInverseMatrix == null) { 1892 v.getMatrix().invert(mTempInverseMatrix); 1893 cachedInverseMatrix = mTempInverseMatrix; 1894 } 1895 xy[0] = xy[0] + mScrollX - v.getLeft(); 1896 xy[1] = xy[1] + mScrollY - v.getTop(); 1897 cachedInverseMatrix.mapPoints(xy); 1898 } 1899 1900 /* 1901 * 1902 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1903 * the parent View's coordinate space. The argument xy is modified with the return result. 1904 * 1905 */ 1906 void mapPointFromChildToSelf(View v, float[] xy) { 1907 v.getMatrix().mapPoints(xy); 1908 xy[0] -= (mScrollX - v.getLeft()); 1909 xy[1] -= (mScrollY - v.getTop()); 1910 } 1911 1912 static private float squaredDistance(float[] point1, float[] point2) { 1913 float distanceX = point1[0] - point2[0]; 1914 float distanceY = point2[1] - point2[1]; 1915 return distanceX * distanceX + distanceY * distanceY; 1916 } 1917 1918 /* 1919 * 1920 * Returns true if the passed CellLayout cl overlaps with dragView 1921 * 1922 */ 1923 boolean overlaps(CellLayout cl, DragView dragView, 1924 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1925 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1926 final float[] draggedItemTopLeft = mTempDragCoordinates; 1927 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1928 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1929 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1930 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1931 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1932 1933 // Transform the dragged item's top left coordinates 1934 // to the CellLayout's local coordinates 1935 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1936 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1937 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1938 1939 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1940 // Transform the dragged item's bottom right coordinates 1941 // to the CellLayout's local coordinates 1942 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1943 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1944 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1945 1946 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1947 float overlap = (overlapRegionRight - overlapRegionLeft) * 1948 (overlapRegionBottom - overlapRegionTop); 1949 if (overlap > 0) { 1950 return true; 1951 } 1952 } 1953 } 1954 return false; 1955 } 1956 1957 /* 1958 * 1959 * This method returns the CellLayout that is currently being dragged to. In order to drag 1960 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1961 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1962 * 1963 * Return null if no CellLayout is currently being dragged over 1964 * 1965 */ 1966 private CellLayout findMatchingPageForDragOver( 1967 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1968 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1969 // with the item being dragged and then choose the one that's closest to the touch point 1970 final int screenCount = getChildCount(); 1971 CellLayout bestMatchingScreen = null; 1972 float smallestDistSoFar = Float.MAX_VALUE; 1973 1974 for (int i = 0; i < screenCount; i++) { 1975 CellLayout cl = (CellLayout)getChildAt(i); 1976 1977 final float[] touchXy = mTempTouchCoordinates; 1978 touchXy[0] = originX + offsetX; 1979 touchXy[1] = originY + offsetY; 1980 1981 // Transform the touch coordinates to the CellLayout's local coordinates 1982 // If the touch point is within the bounds of the cell layout, we can return immediately 1983 cl.getMatrix().invert(mTempInverseMatrix); 1984 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 1985 1986 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 1987 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 1988 return cl; 1989 } 1990 1991 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 1992 // Get the center of the cell layout in screen coordinates 1993 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 1994 cellLayoutCenter[0] = cl.getWidth()/2; 1995 cellLayoutCenter[1] = cl.getHeight()/2; 1996 mapPointFromChildToSelf(cl, cellLayoutCenter); 1997 1998 touchXy[0] = originX + offsetX; 1999 touchXy[1] = originY + offsetY; 2000 2001 // Calculate the distance between the center of the CellLayout 2002 // and the touch point 2003 float dist = squaredDistance(touchXy, cellLayoutCenter); 2004 2005 if (dist < smallestDistSoFar) { 2006 smallestDistSoFar = dist; 2007 bestMatchingScreen = cl; 2008 } 2009 } 2010 } 2011 return bestMatchingScreen; 2012 } 2013 2014 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2015 DragView dragView, Object dragInfo) { 2016 // When touch is inside the scroll area, skip dragOver actions for the current screen 2017 if (!mInScrollArea) { 2018 CellLayout layout; 2019 int originX = x - xOffset; 2020 int originY = y - yOffset; 2021 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2022 if (shrunken) { 2023 layout = findMatchingPageForDragOver( 2024 dragView, originX, originY, xOffset, yOffset); 2025 2026 if (layout != mDragTargetLayout) { 2027 if (mDragTargetLayout != null) { 2028 mDragTargetLayout.setHover(false); 2029 mSpringLoadedDragController.onDragExit(); 2030 } 2031 mDragTargetLayout = layout; 2032 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2033 mDragTargetLayout.setHover(true); 2034 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2035 } 2036 } 2037 } else { 2038 layout = getCurrentDropLayout(); 2039 if (layout != mDragTargetLayout) { 2040 if (mDragTargetLayout != null) { 2041 mDragTargetLayout.onDragExit(); 2042 } 2043 layout.onDragEnter(); 2044 mDragTargetLayout = layout; 2045 } 2046 } 2047 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2048 layout = getCurrentDropLayout(); 2049 2050 final ItemInfo item = (ItemInfo)dragInfo; 2051 if (dragInfo instanceof LauncherAppWidgetInfo) { 2052 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2053 2054 if (widgetInfo.spanX == -1) { 2055 // Calculate the grid spans needed to fit this widget 2056 int[] spans = layout.rectToCell( 2057 widgetInfo.minWidth, widgetInfo.minHeight, null); 2058 item.spanX = spans[0]; 2059 item.spanY = spans[1]; 2060 } 2061 } 2062 2063 if (source instanceof AllAppsPagedView) { 2064 // This is a hack to fix the point used to determine which cell an icon from 2065 // the all apps screen is over 2066 if (item != null && item.spanX == 1 && layout != null) { 2067 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2068 2069 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2070 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2071 dragView.setDragRegion(dragView.getDragRegionLeft(), 2072 dragView.getDragRegionTop(), 2073 layout.getCellWidth(), 2074 dragView.getDragRegionHeight()); 2075 } 2076 } 2077 } 2078 2079 if (mDragTargetLayout != null) { 2080 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2081 float[] localOrigin = { originX, originY }; 2082 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2083 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2084 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2085 } 2086 } 2087 } 2088 } 2089 2090 public void onDragExit(DragSource source, int x, int y, int xOffset, 2091 int yOffset, DragView dragView, Object dragInfo) { 2092 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2093 if (mDragTargetLayout != null) { 2094 mDragTargetLayout.onDragExit(); 2095 } 2096 if (!mIsPageMoving) { 2097 hideOutlines(); 2098 } 2099 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2100 mLauncher.exitSpringLoadedDragMode(); 2101 } 2102 clearAllHovers(); 2103 } 2104 2105 @Override 2106 public void getHitRect(Rect outRect) { 2107 // We want the workspace to have the whole area of the display (it will find the correct 2108 // cell layout to drop to in the existing drag/drop logic. 2109 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2110 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2111 } 2112 2113 /** 2114 * Add the item specified by dragInfo to the given layout. 2115 * @return true if successful 2116 */ 2117 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2118 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2119 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2120 return true; 2121 } 2122 mLauncher.showOutOfSpaceMessage(); 2123 return false; 2124 } 2125 2126 /** 2127 * Drop an item that didn't originate on one of the workspace screens. 2128 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2129 * come from another app altogether. 2130 * 2131 * NOTE: This can also be called when we are outside of a drag event, when we want 2132 * to add an item to one of the workspace screens. 2133 */ 2134 private void onDropExternal(int x, int y, Object dragInfo, 2135 CellLayout cellLayout, boolean insertAtFirst) { 2136 int screen = indexOfChild(cellLayout); 2137 if (dragInfo instanceof PendingAddItemInfo) { 2138 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2139 // When dragging and dropping from customization tray, we deal with creating 2140 // widgets/shortcuts/folders in a slightly different way 2141 // Only set touchXY if you are supporting spring loaded adding of items 2142 int[] touchXY = new int[2]; 2143 touchXY[0] = x; 2144 touchXY[1] = y; 2145 switch (info.itemType) { 2146 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2147 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2148 break; 2149 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2150 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2151 break; 2152 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2153 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2154 break; 2155 default: 2156 throw new IllegalStateException("Unknown item type: " + info.itemType); 2157 } 2158 cellLayout.onDragExit(); 2159 } else { 2160 // This is for other drag/drop cases, like dragging from All Apps 2161 ItemInfo info = (ItemInfo) dragInfo; 2162 View view = null; 2163 2164 switch (info.itemType) { 2165 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2166 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2167 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2168 // Came from all apps -- make a copy 2169 info = new ShortcutInfo((ApplicationInfo) info); 2170 } 2171 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2172 (ShortcutInfo) info); 2173 break; 2174 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2175 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2176 cellLayout, (UserFolderInfo) info, mIconCache); 2177 break; 2178 default: 2179 throw new IllegalStateException("Unknown item type: " + info.itemType); 2180 } 2181 2182 mTargetCell = new int[2]; 2183 if (x != -1 && y != -1) { 2184 // when dragging and dropping, just find the closest free spot 2185 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2186 } else { 2187 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2188 } 2189 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2190 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2191 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2192 cellLayout.onDropChild(view, animateDrop); 2193 cellLayout.animateDrop(); 2194 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2195 2196 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2197 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2198 lp.cellX, lp.cellY); 2199 } 2200 } 2201 2202 /** 2203 * Return the current {@link CellLayout}, correctly picking the destination 2204 * screen while a scroll is in progress. 2205 */ 2206 private CellLayout getCurrentDropLayout() { 2207 // if we're currently small, use findMatchingPageForDragOver instead 2208 if (mIsSmall) return null; 2209 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2210 return (CellLayout) getChildAt(index); 2211 } 2212 2213 /** 2214 * Return the current CellInfo describing our current drag; this method exists 2215 * so that Launcher can sync this object with the correct info when the activity is created/ 2216 * destroyed 2217 * 2218 */ 2219 public CellLayout.CellInfo getDragInfo() { 2220 return mDragInfo; 2221 } 2222 2223 /** 2224 * Calculate the nearest cell where the given object would be dropped. 2225 */ 2226 private int[] findNearestVacantArea(int pixelX, int pixelY, 2227 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2228 2229 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2230 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2231 2232 // Find the best target drop location 2233 return layout.findNearestVacantArea( 2234 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2235 } 2236 2237 /** 2238 * Estimate the size that a child with the given dimensions will take in the current screen. 2239 */ 2240 void estimateChildSize(int minWidth, int minHeight, int[] result) { 2241 ((CellLayout)getChildAt(mCurrentPage)).estimateChildSize(minWidth, minHeight, result); 2242 } 2243 2244 void setLauncher(Launcher launcher) { 2245 mLauncher = launcher; 2246 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2247 2248 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2249 if (mCustomizationDrawer != null) { 2250 mCustomizationDrawerContent = 2251 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2252 } 2253 } 2254 2255 public void setDragController(DragController dragController) { 2256 mDragController = dragController; 2257 } 2258 2259 public void onDropCompleted(View target, boolean success) { 2260 if (success) { 2261 if (target != this && mDragInfo != null) { 2262 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2263 cellLayout.removeView(mDragInfo.cell); 2264 if (mDragInfo.cell instanceof DropTarget) { 2265 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2266 } 2267 // final Object tag = mDragInfo.cell.getTag(); 2268 } 2269 } else if (mDragInfo != null) { 2270 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2271 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2272 } 2273 2274 mDragOutline = null; 2275 mDragInfo = null; 2276 } 2277 2278 @Override 2279 public void onDragViewVisible() { 2280 ((View) mDragInfo.cell).setVisibility(View.GONE); 2281 } 2282 2283 public boolean isDropEnabled() { 2284 return true; 2285 } 2286 2287 @Override 2288 protected void onRestoreInstanceState(Parcelable state) { 2289 super.onRestoreInstanceState(state); 2290 Launcher.setScreen(mCurrentPage); 2291 } 2292 2293 @Override 2294 public void scrollLeft() { 2295 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2296 super.scrollLeft(); 2297 } 2298 } 2299 2300 @Override 2301 public void scrollRight() { 2302 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2303 super.scrollRight(); 2304 } 2305 } 2306 2307 @Override 2308 public void onEnterScrollArea(int direction) { 2309 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2310 mInScrollArea = true; 2311 mPendingScrollDirection = direction; 2312 2313 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2314 final CellLayout layout = (CellLayout) getChildAt(page); 2315 2316 if (layout != null) { 2317 layout.setHover(true); 2318 2319 if (mDragTargetLayout != null) { 2320 mDragTargetLayout.onDragExit(); 2321 mDragTargetLayout = null; 2322 } 2323 } 2324 } 2325 } 2326 2327 private void clearAllHovers() { 2328 final int childCount = getChildCount(); 2329 for (int i = 0; i < childCount; i++) { 2330 ((CellLayout) getChildAt(i)).setHover(false); 2331 } 2332 mSpringLoadedDragController.onDragExit(); 2333 } 2334 2335 @Override 2336 public void onExitScrollArea() { 2337 if (mInScrollArea) { 2338 mInScrollArea = false; 2339 mPendingScrollDirection = DragController.SCROLL_NONE; 2340 clearAllHovers(); 2341 } 2342 } 2343 2344 public Folder getFolderForTag(Object tag) { 2345 final int screenCount = getChildCount(); 2346 for (int screen = 0; screen < screenCount; screen++) { 2347 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2348 int count = currentScreen.getChildCount(); 2349 for (int i = 0; i < count; i++) { 2350 View child = currentScreen.getChildAt(i); 2351 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2352 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2353 Folder f = (Folder) child; 2354 if (f.getInfo() == tag && f.getInfo().opened) { 2355 return f; 2356 } 2357 } 2358 } 2359 } 2360 return null; 2361 } 2362 2363 public View getViewForTag(Object tag) { 2364 int screenCount = getChildCount(); 2365 for (int screen = 0; screen < screenCount; screen++) { 2366 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2367 int count = currentScreen.getChildCount(); 2368 for (int i = 0; i < count; i++) { 2369 View child = currentScreen.getChildAt(i); 2370 if (child.getTag() == tag) { 2371 return child; 2372 } 2373 } 2374 } 2375 return null; 2376 } 2377 2378 2379 void removeItems(final ArrayList<ApplicationInfo> apps) { 2380 final int screenCount = getChildCount(); 2381 final PackageManager manager = getContext().getPackageManager(); 2382 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2383 2384 final HashSet<String> packageNames = new HashSet<String>(); 2385 final int appCount = apps.size(); 2386 for (int i = 0; i < appCount; i++) { 2387 packageNames.add(apps.get(i).componentName.getPackageName()); 2388 } 2389 2390 for (int i = 0; i < screenCount; i++) { 2391 final CellLayout layout = (CellLayout) getChildAt(i); 2392 2393 // Avoid ANRs by treating each screen separately 2394 post(new Runnable() { 2395 public void run() { 2396 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2397 childrenToRemove.clear(); 2398 2399 int childCount = layout.getChildCount(); 2400 for (int j = 0; j < childCount; j++) { 2401 final View view = layout.getChildAt(j); 2402 Object tag = view.getTag(); 2403 2404 if (tag instanceof ShortcutInfo) { 2405 final ShortcutInfo info = (ShortcutInfo) tag; 2406 final Intent intent = info.intent; 2407 final ComponentName name = intent.getComponent(); 2408 2409 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2410 for (String packageName: packageNames) { 2411 if (packageName.equals(name.getPackageName())) { 2412 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2413 childrenToRemove.add(view); 2414 } 2415 } 2416 } 2417 } else if (tag instanceof UserFolderInfo) { 2418 final UserFolderInfo info = (UserFolderInfo) tag; 2419 final ArrayList<ShortcutInfo> contents = info.contents; 2420 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2421 final int contentsCount = contents.size(); 2422 boolean removedFromFolder = false; 2423 2424 for (int k = 0; k < contentsCount; k++) { 2425 final ShortcutInfo appInfo = contents.get(k); 2426 final Intent intent = appInfo.intent; 2427 final ComponentName name = intent.getComponent(); 2428 2429 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2430 for (String packageName: packageNames) { 2431 if (packageName.equals(name.getPackageName())) { 2432 toRemove.add(appInfo); 2433 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2434 removedFromFolder = true; 2435 } 2436 } 2437 } 2438 } 2439 2440 contents.removeAll(toRemove); 2441 if (removedFromFolder) { 2442 final Folder folder = getOpenFolder(); 2443 if (folder != null) 2444 folder.notifyDataSetChanged(); 2445 } 2446 } else if (tag instanceof LiveFolderInfo) { 2447 final LiveFolderInfo info = (LiveFolderInfo) tag; 2448 final Uri uri = info.uri; 2449 final ProviderInfo providerInfo = manager.resolveContentProvider( 2450 uri.getAuthority(), 0); 2451 2452 if (providerInfo != null) { 2453 for (String packageName: packageNames) { 2454 if (packageName.equals(providerInfo.packageName)) { 2455 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2456 childrenToRemove.add(view); 2457 } 2458 } 2459 } 2460 } else if (tag instanceof LauncherAppWidgetInfo) { 2461 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2462 final AppWidgetProviderInfo provider = 2463 widgets.getAppWidgetInfo(info.appWidgetId); 2464 if (provider != null) { 2465 for (String packageName: packageNames) { 2466 if (packageName.equals(provider.provider.getPackageName())) { 2467 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2468 childrenToRemove.add(view); 2469 } 2470 } 2471 } 2472 } 2473 } 2474 2475 childCount = childrenToRemove.size(); 2476 for (int j = 0; j < childCount; j++) { 2477 View child = childrenToRemove.get(j); 2478 layout.removeViewInLayout(child); 2479 if (child instanceof DropTarget) { 2480 mDragController.removeDropTarget((DropTarget)child); 2481 } 2482 } 2483 2484 if (childCount > 0) { 2485 layout.requestLayout(); 2486 layout.invalidate(); 2487 } 2488 } 2489 }); 2490 } 2491 } 2492 2493 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2494 final int screenCount = getChildCount(); 2495 for (int i = 0; i < screenCount; i++) { 2496 final CellLayout layout = (CellLayout) getChildAt(i); 2497 int childCount = layout.getChildCount(); 2498 for (int j = 0; j < childCount; j++) { 2499 final View view = layout.getChildAt(j); 2500 Object tag = view.getTag(); 2501 if (tag instanceof ShortcutInfo) { 2502 ShortcutInfo info = (ShortcutInfo)tag; 2503 // We need to check for ACTION_MAIN otherwise getComponent() might 2504 // return null for some shortcuts (for instance, for shortcuts to 2505 // web pages.) 2506 final Intent intent = info.intent; 2507 final ComponentName name = intent.getComponent(); 2508 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2509 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2510 final int appCount = apps.size(); 2511 for (int k = 0; k < appCount; k++) { 2512 ApplicationInfo app = apps.get(k); 2513 if (app.componentName.equals(name)) { 2514 info.setIcon(mIconCache.getIcon(info.intent)); 2515 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2516 new FastBitmapDrawable(info.getIcon(mIconCache)), 2517 null, null); 2518 } 2519 } 2520 } 2521 } 2522 } 2523 } 2524 } 2525 2526 void moveToDefaultScreen(boolean animate) { 2527 if (mIsSmall || mIsInUnshrinkAnimation) { 2528 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2529 } else if (animate) { 2530 snapToPage(mDefaultPage); 2531 } else { 2532 setCurrentPage(mDefaultPage); 2533 } 2534 getChildAt(mDefaultPage).requestFocus(); 2535 } 2536 2537 void setIndicators(Drawable previous, Drawable next) { 2538 mPreviousIndicator = previous; 2539 mNextIndicator = next; 2540 previous.setLevel(mCurrentPage); 2541 next.setLevel(mCurrentPage); 2542 } 2543 2544 @Override 2545 public void syncPages() { 2546 } 2547 2548 @Override 2549 public void syncPageItems(int page) { 2550 } 2551 2552} 2553